Propylene Glycol is a petroleum based liquid and not good for skin or body. I am not much into castor oil, but that it is hydrogenated sounds terrible to me. Otherwise, the Minoxidil and Ketoconazole acid are really cheap in those concentrations. All of the good things are kind of offset by the bad things and the price.Also Propanediol does not look too appealing as a primary ingredient either http://chemicaloftheday.squarespace.com/todays-chemical/2016/3/3/propanediol.html